In 2018, Denver entered the public micro-mobility[141] space with dockless electric scooters and e-bike services. Hundreds of unsanctioned LimeBike and Bird electric scooters appeared on Denver streets in May, causing an uproar. The scooters were nixed in June;[142] the city scrambled to create an official city pilot program, making a requirement that scooters be left at RTD stops and out of the public right-of-way. Lime and Bird scooters then reappeared in late July, with limited compliance. Uber's Jump e-bikes arrived in late August, followed by Lyft's nationwide electric scooter launch in early September.[143] Lyft plans to offer ride-sharing, electric scooter and e-bike services all from its app. It says that it will, each night, take the scooters to the warehouse for safety checks, maintenance and charging. Additionally, Spin and Razor each were permitted to add 350 scooters to the mix.[144]
Denver is in the center of the Front Range Urban Corridor, between the Rocky Mountains to the west and the High Plains to the east. Denver's topography consists of plains in the city center with hilly areas to the north, west and south. According to the United States Census Bureau the city has a total area of 155 square miles (401 km2), of which 153 square miles (396 km2) is land and 1.6 square miles (4.1 km2) (1.1%) is water.[50] The City and County of Denver is surrounded by only three other counties: Adams County to the north and east, Arapahoe County to the south and east, and Jefferson County to the west.